Improvement in mop-heads



1- K. CLARK. MUD-Head.

No.|66,850, PatenredAugAmn.

UNITED' STATES PATENT OFFICE.

JOHN K. CLARK, OF BUFFALO, NEW YORK.

IMPROVEMENT IN MOP-HEADS.

Specification forming part of Letters Patent No. 166,850, dated August 17, 1875; application filed January 14, 1875.

To all whom it may concern:

Be it known that I, JOHN K. CLARK, of Buffalo, in the county of Erie and State of New York, have invented a certain new and useful Improvement in Mop-Heads, of which the following is a specification:

This invention is illustrated in the accompanying drawing, in which Figure 1 represents a plan view of my improvement looking from below. Fig. 2 is a longitudinal sectional view of Fig. l. Fig. 3 is a plan of the collar detached. Fig. 4 is a similar view of the nut.

Similar letters indicate corresponding parts.

This invention relates to the class of mopheads constructed of a fixed and loose jaw, the latter moving toward or from the fixed jaw through the medium of a thumb-nut working in a collar placed on the shank of the loose jaw.

My invention consists in a peculiar construction of the collar, whereby the thumb-nut is easily inserted in its place in the collar, and is retained there by the binding-wire of the loose jaw. The collar consists of a ring having two arms extending from it on opposite sides to receive the ends of thc binding-Wire. The interior of the collar is of the same diameter, excepting near its upper edge, where it is made of a larger diameter, so as to form a ledge, on which the outsideflanges of the nut can ride. The nut is provided with thumb-pieces opposite to each other on the outside of the nut near its lower edge, which serve to rotate the nut and also aid in securing the nut in the collar by means of the ends ofthe binding-wire. The collar is provided with slots, which are made of such a size and arranged in such p0- sitions as to permit the thumb-pieces to pass through them, thereby enabling meto place the nut in the collar without difficulty. When the thumb-pieces are passed through the slots the anges of the nut rest on the ledge ofthe collar, and the thumb-pieces fall just below the plain under surface of the collar, over which surface they freely pass when the nut is turned. The slots in the collar are arranged in line with the arms of the collar that receive the ends of the binding-wire, and the arms are provided with sockets for receiving the ends of the wire, which sockets extend from the ends of the arms inward until they enter the slots, of which they form a continuation. The sockets are covered over for part of their extent by bridge-pieces, under which the wires pass, and by which they are held down, so as not to interfere with the* When the nut is in cross-head and threaded shank composing the.

fixed jaw of my mop-head. The shank B is provided with a cavity to receive the end of a suitable handle, and with segments or teeth a, to which is fitted the thread of the nut O. This nut O works in a collar, D, that, together with a wire, E, constitutes the loose jaw of the mophead. The nut O is provided with th amb-pieces b b, by which it may be turnedV in one or the other direction, and when so turned it, together with the loose jaw D E, moves toward or from the fixed jaw A B, in order to clamp or release the mop-rag. F designates the opening ofthe collar thatv receives the nut O, and from this opening extend slots Gr G, through which the thumb-pieces b b of the nut are passed in adjustng the nut in place, and which slots have their continuations in sockets H H formed in the ends I I of the collar. At the upper edge of the opening F is formed a shoulder, c, while on the nut O are formed flanges d d, that rest against the shoulder.

When the nut is adjusted in the opening F of the collar the shoulder and flan yes c d serve to hold it to thev collar on one si e, while on the other side it is held by the thumb-pieces b, which ride over the plain under surface of the collar, as shown in Fig. 1. When the nut O has been placed in position in the collar the ends of the wire E of the loose jaw are inserted in the sockets H H and slots Gr G, as shown in Figs. 1 and 2, and by this arrangement the thumb-pieces b b can pass and repass over the slots without danger of falling through. Over the sockets H H, and at any point between the ends of the arms and the slots C r G, are formed bridge-pieces J J, under which the ends ofthe Wire are passed in entering the slots, and which serve to hold the wire down.

When the binding-wire is strained on the cross-head A the pressure of the Wire in the ends of the collar partakes of a prying or lever movement, which tends to hold the ends of the Wire more securelylin place, and thus the bridge-pieces serve to prevent the Wire from springing ont of place When that part of the Wire constituting the loose jaw proper is strained on the cross-head Aor on the mop-rag,

When the Wire E has been adjusted in place it is nicked 011 the sides ot' the bridge-pieces J J, so as to form projections or stops ff, which f e'ectually prevent endWise movement of the the collar, and thereby secure the nut in place by the ends of the said binding-Wire, substantial] y as described.

2. The combination of the collar D, constructed With the circular seat b, sockets H, and recesses G, extending laterally from the central opening F, the nut O having the flanges c and thumb-pieces a, and the Wire E having its ends passed through the sockets H, substantially as described, and for the pur- DQse set forth. Y

The collar D, constructed with the sockets H and bridges J, in combination with the nut C and binding-Wire E, having its ends inserted beneath said bridges, and thereby securing the Wires in place, substantially as set forth.

In testimony that I claim the foregoing I have hereunto set my hand and seal this 8th day of January, 1875.

JOHN K. CLARK. lL. s.] Witnesses:

EDWIN L. FERGUSON, DANIEL F. KEMP. 

